Introduction - If you have any usage issues, please Google them yourself
Random page gives an execution sequence, such as: 1,5,3,4,2,1,3,4,5,7,9, ... . Require replacement algorithm for computing several missing pages, missing pages rate and hit rate.
optimal replacement algorithm OPT (Optimal)
FIFO algorithm FIFO (First In First Out)
least recently used algorithm LRU (Least Recently Used)